Over past twenty years, daily usage of Microplastics (MPs) and their pollution are gradually increasing. Especially, the polyethylene bags were used for food storage. So their productivity as well discarding after use are rapidly growing and shown their great impact on the environment. Hence, there is need to control the plastics from environment decomposition. For that, we have attempted that preparation of NiAl₂O₄ Spinels by two different methods such as co-precipitation and hydrothermal. The synthesized spinels were thoroughly studied by some instrumental techniques like X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM-EDX), Fourier transform infrared (FT-IR), and ultraviolet (UV-Vis) spectrophotometer). The photocatalytic experiment was adopted for the degradation of commercially available polyethylene bags using prepared spinels. The obtained results from FTIR after degradation process confirmed that the polyethylene sheet was degraded in 5 h with the help of prepared spinels and the weight loss is 12.5 % obtained using hydrothermally prepared spinels. This study shows new path to develop more functional materials for the degradation of MPs.

在过去的二十年中，微塑料（MPs）的日常使用及其污染正在逐步增加。尤其是，聚乙烯袋用于食品储存。因此，它们的生产率以及使用后的丢弃率都在迅速增长，并显示出它们对环境的巨大影响。因此，需要控制塑料免受环境分解。为此，我们尝试了制备NiAl ₂ O ₄尖晶石可以通过两种不同的方法进行沉淀，例如共沉淀法和水热法。通过诸如X射线衍射（XRD），X射线光电子能谱（XPS），扫描电子显微镜（SEM-EDX），傅立叶变换红外（FT-IR）和紫外（UV）等一些仪器技术对合成的尖晶石进行了深入研究-Vis分光光度计）。采用光催化实验以使用制备的尖晶石降解市售聚乙烯袋。降解过程后从FTIR获得的结果证实，在制备的尖晶石的帮助下，聚乙烯片材在5小时内降解，使用水热制备的尖晶石的重量损失为12.5％。这项研究显示了开发更多功能材料以降解MP的新途径。